Valve device

Abstract

The utility model relates to a valve device which comprises a valve body assembly and a valve element. The valve body assembly comprises a first valve body and a second valve body, the second valve body comprises a first part and a second part, the first part is provided with a first hole channel, and the first part and the second part are of a split structure and are fixedly connected; the valve element comprises a shaft part, at least part of the shaft part is located in the first hole channel, and the peripheral part of the shaft part is in sliding fit with the wall forming the first hole channel. The second component is provided with a first positioning part used for being matched with an external component, or the second component is provided with a second positioning part used for being matched with the first valve body. The first component and the second component are arranged to be of a split structure, so that the first component and the second component can be machined separately, the machining precision of the first component, the second component and the second valve body is improved, the machining difficulty of the second valve body is reduced, the machining yield of the second valve body is improved, and the assembling difficulty of the valve device is reduced; and the assembly accuracy and the assembly precision of the valve device are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle thermal management technology, and more particularly to a valve device. Background Technology

[0002] A valve device can control the on / off state and flow rate of fluid in a pipeline. The valve device includes a valve body assembly and a valve core. The valve body assembly includes a first valve body and a valve body. The valve body includes at least a first component, a second component, and a third component. The first component is rotatably engaged with the valve core. One of the second and third components is used to engage with an external component, and the other is used to engage with the first valve body.

[0003] Typically, the first, second, and third components are integrated into a single structure, making the valve body a single unit. However, due to the high machining precision required for the channels used to mate with the valve core and the grooves used to mate with external components, controlling the machining precision of the integrated structure during processing is difficult, which poses risks such as the machining precision of the valve body not meeting requirements and damage during processing. Utility Model Content

[0004] This application relates to a valve device that can improve the machining accuracy and yield of the valve body.

[0005] This application provides a valve device, which includes a valve body assembly and a valve core; the valve body assembly includes a first valve body and a second valve body, the second valve body includes a first component and a second component, the first component has a first channel, the first component and the second component are separate structures, and the first component and the second component are fixedly connected; the valve core includes a shaft portion, at least a portion of which is located within the first channel, and the outer periphery of the shaft portion slides in engagement with the wall forming the first channel; the second component has a first positioning portion for engaging with an external component, or the second component has a second positioning portion for engaging with the first valve body.

[0006] In this application, the first component and the second component are configured as separate structures, which allows the first component and the second component to be processed separately. This is beneficial to improve the processing accuracy of the first component and the second component, thereby improving the assembly accuracy of the first component, the second component, the first valve body, external components and other structures, reducing the processing difficulty of the second valve body, improving the processing accuracy of the second valve body, improving the processing yield of the second valve body, reducing the assembly difficulty of the valve device, and thus facilitating the improvement of the assembly accuracy and precision of the valve device.

[0007] In one possible design, the second valve body further includes a third component; when the second component has a first positioning portion for cooperating with an external component, the third component has a second positioning portion for cooperating with the first valve body; when the second component has a second positioning portion for cooperating with the first valve body, the third component has a first positioning portion for cooperating with an external component; one of the first component and the second component is integrally formed with the third component.

[0008] In one possible design, the second and third components are integrally formed. The second component has a second positioning portion for engaging with the first valve body, and the third component has a first positioning portion for engaging with an external component. The valve device also includes a valve seat mounted on the first valve body. Along the radial direction of the valve device, one side of the valve seat slides with the outer periphery of the valve core. The centerline of the first channel extends in the axial direction of the valve device. Along the axial direction of the valve device, the second component is located on the side of the third component facing the valve seat. The second valve body has a second channel that extends through the second and third components along the axial direction of the valve device, and at least a portion of the first component is located within the second channel.

[0009] In one possible design, along the axial direction of the valve assembly, the first component has a first surface at the end facing the valve seat, and the second component has a second surface at the end facing away from the third component. The distance L between the first surface and the second surface along the axial direction of the valve assembly satisfies: 0 ≤ L ≤ 0.5 mm.

[0010] In one possible design, along the axial direction of the valve assembly, the first component has a third surface on the side opposite to the valve seat, and a portion of the first component protrudes from the third surface in the direction opposite to the valve seat.

[0011] In one possible design, the first component and the third component are an integral structure. The second component has a first positioning part for cooperating with an external component, and the third component has a second positioning part for cooperating with the first valve body. The second component is sleeved on the outside of the first component. The valve device also includes a valve seat, which is installed on the first valve body. Along the radial direction of the valve device, one side of the valve seat slides in cooperation with the outer periphery of the valve core. The extension direction of the center line of the first channel is the axial direction of the valve device. Along the axial direction of the valve device, the second component is located on the side of the third component opposite to the valve seat, and the second component and the third component are in contact in the axial direction of the valve device.

[0012] In one possible design, the first component and the second component are interference-fitted, or the first component and the second component are welded together.

[0013] In one possible design, the first component is barrel-shaped, and the surface roughness Ra of the sidewall used to form the first channel satisfies: 0.6μm≤Ra≤1μm.

[0014] In one possible design, the first positioning part includes a first groove and a second groove. Along the radial direction of the valve device, the first groove and the second groove are located on both sides of the second valve body, respectively. The first groove and the second groove are recessed into the radial edge of the second valve body. The first groove and the second groove are used to cooperate with external components. The side of the first groove opposite to the second groove has a first opening. In the radial direction of the valve device, the first groove communicates with the outside through the first opening. The side of the second groove opposite to the first groove has a second opening. In the radial direction of the valve device, the second groove communicates with the outside through the second opening. The opening directions of the first opening and the second opening are opposite.

[0015] In one possible design, the second valve body has a first wall and a second wall, which together form a second positioning part. Along the radial direction of the valve device, the first wall and the second wall are located on both sides of the second valve body. The first valve body has a first mating wall and a second mating wall, which mate with the first wall and with the second wall. Both the first wall and the second wall are straight walls.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0017] Figure 1 A schematic diagram of the valve device provided in this application in one embodiment;

[0018] Figure 2 for Figure 1 Exploded view;

[0019] Figure 3 for Figure 1 A sectional view;

[0020] Figure 4 for Figure 3 A magnified view of the local structure of part A in the image;

[0021] Figure 5 A schematic diagram of the valve body provided in this application in a first embodiment;

[0022] Figure 6 for Figure 5 The right view;

[0023] Figure 7 for Figure 5 Front view;

[0024] Figure 8 for Figure 5 A sectional view;

[0025] Figure 9 for Figure 5 Exploded view;

[0026] Figure 10For the first valve body and Figure 5 A cross-sectional view of the valve body fitting in the middle;

[0027] Figure 11 for Figure 8 A schematic diagram of the structure of the first component in the diagram;

[0028] Figure 12 A schematic diagram of the valve body provided in this application in a second embodiment;

[0029] Figure 13 for Figure 12 Mid-top view;

[0030] Figure 14 for Figure 12 A sectional view;

[0031] Figure 15 for Figure 12 Exploded view;

[0032] Figure 16 for Figure 12 A schematic diagram of the integrated structure of the first and third components;

[0033] Figure 17 For the first valve body and Figure 12 A cross-sectional view of the valve body fittings.

[0034] Figure label:

[0035] 1-Control head assembly; 11-Stator; 12-Rotor; 13-Transmission components;

[0036] 2-Valve body assembly;

[0037] 21-First valve body; 211-First mating wall; 212-Second mating wall;

[0038] 22-Second valve body; 221-First component; 221a-First surface; 221b-Third surface; 221c-First channel; 222-Second component; 222a-Second surface; 223-Third component; 224-Second channel; 225-First positioning part; 225a-First groove; 225b-Second groove; 225c-First opening; 225d-Second opening; 226-Second positioning part; 226a-First wall; 226b-Second wall;

[0039] 23-Third valve body;

[0040] 3-Valve core; 31-Shaft portion;

[0041] 4-Valve seat;

[0042] 5-Seals.

[0043] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. Detailed Implementation

[0044] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0045] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0046] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0047] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0048] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0049] This application provides a valve device, such as... Figure 1 , Figure 2 and Figure 3 As shown, the valve device includes a control head assembly 1, a valve body assembly 2, and a valve core 3, with at least a portion of the valve core 3 located within the receiving cavity of the valve body assembly 2. Figure 3As shown, the control head assembly 1 includes a stator assembly 11, a rotor assembly 12, and a transmission assembly 13. The stator assembly 11 is mounted on the housing of the control head assembly 1. The rotor assembly 12 is connected to the transmission assembly 13, and one end of the transmission assembly 13 is connected to the valve core 3. The stator assembly 11 can be electrically and / or signal connected to the outside. The stator assembly 11 can drive the rotor assembly 12 to rotate, and the rotor assembly 12 drives the valve core 3 to rotate around the central axis of the valve core 3 through the transmission assembly 13. The transmission assembly 13 is a planetary gear mechanism, and the axial direction of the valve device is the same as the extension direction of the central axis of the valve core 3.

[0050] like Figure 2 and Figure 3 As shown, the valve body assembly 2 includes a first valve body 21, a second valve body 22, and a third valve body 23 distributed along the axial direction of the valve device. The two ends of the first valve body 21 are connected to the second valve body 22 and the third valve body 23, respectively. The control head assembly 1 is mounted on the third valve body 23. A portion of the valve core 3 extends along the central axis into the interior of the first valve body 21 and the second valve body 22, as shown. Figure 4 As shown, the shaft portion 31 of the valve core 3 can slide with the second valve body 22.

[0051] like Figure 2 , Figure 3 and Figure 4 As shown, the valve device also includes a valve seat 4, which is mounted on the first valve body 21. Along the radial direction of the valve device, one side of the valve seat 4 slides in cooperation with the outer periphery of the valve core 3, and the valve seat 4 can support the valve core 3.

[0052] like Figure 4 As shown, the valve device also includes a sealing element 5. The valve seat 4 and the first valve body 21 are sealed together by the sealing element 5, and the sealing element 5 can apply a radial force to the valve seat 4, thereby making the valve seat 4 contact the outer periphery of the valve seat 4.

[0053] Specifically, the second valve body 22 includes a first component 221 and a second component 222. The first component 221 has a first channel 221c. The first channel 221c extends through the first component 221 along the axial direction of the valve device, that is, the extension direction of the center line of the first channel 221c is the axial direction of the valve device. At least a portion of the shaft portion 31 is located in the first channel 221c, and the outer periphery of the shaft portion 31 slides with the wall forming the first channel 221c.

[0054] The second component 222 has a first positioning part 225 for cooperating with an external component, or the second component 222 has a second positioning part 226 for cooperating with the first valve body 21. The first component 221 and the second component 222 are separate structures, and the first component 221 and the second component 222 are fixedly connected. The external component can be a component used to fix the second valve body 22 during processing, installation, transportation, etc.

[0055] Setting the first component 221 and the second component 222 as separate structures allows the first component 221 and the second component 222 to be processed separately, which helps to improve the processing accuracy of the first component 221 and the second component 222, thereby improving the assembly accuracy of the first component 221, the second component 222, the first valve body 21, external components and other structures, reducing the processing difficulty of the second valve body 22, improving the processing accuracy of the second valve body 22, improving the processing yield of the second valve body 22, reducing the assembly difficulty of the valve device, and thus facilitating the improvement of the assembly accuracy and precision of the valve device.

[0056] In addition, such as Figure 4 As shown, the second valve body 22 also includes a third component 223. When the second component 222 has a first positioning portion 225 for cooperating with an external component, the third component 223 has a second positioning portion 226 for cooperating with the first valve body 21; when the second component 222 has a second positioning portion 226 for cooperating with the first valve body 21, the third component 223 has a first positioning portion 225 for cooperating with an external component; one of the first component 221 and the second component 222 is integrally formed with the third component 223.

[0057] Integrating one of the first component 221 and the second component 222 into a single structure with the third component 223 can reduce the processing complexity of the second valve body 22, thereby shortening the processing cycle of the second valve body 22 and reducing the processing cost of the second valve body 22.

[0058] In general, such as Figure 4 As shown, the second valve body 22 includes a first component 221, a second component 222 and a third component 223. The first component 221 is used to slide with the valve core 3. One of the second component 222 and the third component 223 is used to connect with the first valve body 21, and the other is used to cooperate with an external component. The external component can be a component used to fix the second valve body 22 during processing, installation, transportation and other processes.

[0059] Two of the first component 221, the second component 222, and the third component 223 are integral structures, while the remaining component is a separate structure and fixedly connected. This reduces the processing difficulty of the second valve body 22, improves the processing accuracy of the second valve body 22, and increases the processing yield of the second valve body 22, thereby facilitating the improvement of the assembly accuracy and precision of the valve device.

[0060] In the first embodiment, such as Figures 5 to 8As shown, the second component 222 and the third component 223 are an integral structure. The second component 222 has a second positioning part 226 for cooperating with the first valve body 21, and the third component 223 has a first positioning part 225 for cooperating with external components. The first component 221 and the second component 222 are fixedly connected. The form of fixed connection includes, but is not limited to, interference fit or welding. The embodiments of this application do not impose special limitations on the connection method of the first component 221 and the second component 222.

[0061] In this embodiment, processing the first component 221 as an independent component improves its machining accuracy and reduces its machining difficulty. Machining the second component 222 and the third component 223 as a whole, while meeting their machining accuracy requirements, reduces their installation difficulty and shortens the machining and assembly cycle of the second valve body 22.

[0062] Among them, such as Figure 8 and Figure 9 As shown, the second valve body 22 has a second channel 224 that extends through the second component 222 and the third component 223 along the axial direction of the valve device, and at least a portion of the first component 221 is located within the second channel 224.

[0063] In this embodiment, the first component 221 is installed in the second channel 224. The wall forming the second channel 224 can limit the position of the first component 221, reducing the risk of the axis of the first channel 221c on the first component 221 being misaligned, thereby improving the accuracy of the assembly of the first component 221 and the valve core 3.

[0064] Along the axial direction of the valve device, the second component 222 is located on the side of the third component 223 facing the valve seat 4. When the first valve body 21 cooperates with the second component 222, the first valve body 21 can abut against the third component 223, thereby simplifying the structure of the first valve body 21 and reducing the cost of the first valve body 21 and the valve device.

[0065] like Figure 6 , Figure 8 , Figure 9 and Figure 11As shown, along the axial direction of the valve device, the first component 221 has a first surface 221a at the end facing the valve seat 4, and the second component 222 has a second surface 222a at the end facing away from the third component 223. The distance L between the first surface 221a and the second surface 222a along the axial direction of the valve device satisfies: 0≤L≤0.5mm. Specifically, L can be 0mm, 0.02mm, 0.04mm, 0.06mm, 0.08mm, 0.1mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, 0.2mm, 0.22mm, 0.24mm, 0.26mm, 0.28mm, 0.3mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, 0.4mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, 0.5mm, etc.

[0066] In this embodiment, 0≤L≤0.5mm allows the first component 221 and the second component 222 to be fixed by flat welding, which helps to improve the welding quality between the first component 221 and the second component 222, reduce the risk of defects such as bubbles, and shorten the welding cycle between the first component 221 and the second component 222, thereby shortening the processing cycle of the second valve body 22.

[0067] like Figure 8 , Figure 9 and Figure 11 As shown, along the axial direction of the valve device, the first component 221 has a third surface 221b on the side opposite to the valve seat 4, and a portion of the first component 221 protrudes from the third surface 221b in the direction opposite to the valve seat 4.

[0068] In this embodiment, the first component 221 extends away from the valve seat 4 and protrudes from the third component 223, increasing the axial dimension of the first component 221 in the valve device. This reduces the processing difficulty of the first component 221 and also helps to improve the structural strength of the first component 221. At the same time, it increases the dimension of the first component 221 for mating with the shaft portion 31 of the valve core 3, thereby improving the reliability of the mating between the first component 221 and the valve core 3 and reducing the risk of the valve core 3 detaching from the first component 221.

[0069] like Figure 11As shown, the first component 221 is cylindrical in shape, and the surface roughness Ra of the sidewall used to form the first channel 221c satisfies: 0.6μm≤Ra≤1μm. The specific roughness can be 0.62μm, 0.64μm, 0.66μm, 0.68μm, 0.7μm, 0.72μm, 0.74μm, 0.76μm, 0.78μm, 0.8μm, 0.82μm, 0.84μm, 0.86μm, 0.88μm, 0.9μm, 0.92μm, 0.94μm, 0.96μm, 0.98μm, 1μm, etc.

[0070] In this embodiment, if the surface roughness of the sidewall of the first channel 221c is small, for example, Ra < 0.6 μm, the processing difficulty of the first component 221 is high, the processing cycle is long, and the processing cost is high. If the surface roughness of the sidewall of the first channel 221c is large, for example, Ra > 1 μm, the risk of the sidewall of the first channel 221c scratching the valve core 3 is high, affecting the life of the valve core 3. Therefore, 0.6 μm ≤ Ra ≤ 1 μm reduces the processing difficulty of the first component 221, shortens the processing cycle of the first component 221, reduces the processing cost of the first component 221, and at the same time reduces the risk of the sidewall of the first channel 221c scratching the valve core 3, which is beneficial to improving the life of the valve core 3.

[0071] like Figure 6 , Figure 7 and Figure 10 As shown, the first positioning part 225 includes a first groove 225a and a second groove 225b. Along the radial direction of the valve device, the first groove 225a and the second groove 225b are respectively located on both sides of the third component 223 of the second valve body 22. The first groove 225a and the second groove 225b are recessed into the radial edge of the third component 223 of the second valve body 22. The first groove 225a and the second groove 225b are used to cooperate with external components.

[0072] In this embodiment, the external components fix the second valve body 22 from both sides of the third component 223, which improves the accuracy of the external components in limiting the position, angle and other parameters of the second valve body 22, thereby helping to improve the processing accuracy and assembly accuracy of the second valve body 22.

[0073] like Figure 6 As shown, the first groove 225a has a first opening 225c on the side opposite to the second groove 225b. In the radial direction of the valve device, the first groove 225a communicates with the outside through the first opening 225c. The second groove 225b has a second opening 225d on the side opposite to the first groove 225a. In the radial direction of the valve device, the second groove 225b communicates with the outside through the second opening 225d. The opening directions of the first opening 225c and the second opening 225d are opposite to each other.

[0074] By setting a first opening 225c at the edge of the first groove 225a and a second opening 225d at the edge of the second groove 225b, the structure of the external component can be easily extended into the first groove 225a and the second groove 225b through the first opening 225c and the second opening 225d, thereby reducing the difficulty of fitting the external component with the third component 223.

[0075] like Figure 6 , Figure 7 and Figure 10 As shown, the second component 222 of the second valve body 22 has a first wall 226a and a second wall 226b. The first wall 226a and the second wall 226b constitute the second positioning part 226. Along the radial direction of the valve device, the first wall 226a and the second wall 226b are located on both sides of the second component 222. The first valve body 21 has a first mating wall 211 and a second mating wall 212. The first mating wall 211 mates with the first wall 226a, and the second mating wall 212 mates with the second wall 226b.

[0076] In this embodiment, during the assembly of the first valve body 21 and the second valve body 22, the first mating wall 211 is first mated with the first wall 226a, and the second mating wall 212 is mated with the second wall 226b. Then, the first valve body 21 is welded or bonded to the second component 222. The mating of the first mating wall 211 with the first wall 226a and the second mating wall 212 with the second wall 226b can play a role in pre-positioning the first valve body 21 and the second component 222, reducing the risk of relative position changes of the first valve body 21 and the second component 222 during welding or bonding. This improves the accuracy of the relative position of the first valve body 21 and the second component 222, thereby improving the fitting accuracy and assembly efficiency of the valve device.

[0077] The first wall 226a and the second wall 226b are both straight walls, which reduces the risk of the first mating wall 211 sliding or rotating along the first wall 226a and the second mating wall 212 sliding or rotating along the second wall 226b. This further improves the accuracy of the relative position of the first valve body 21 and the second component 222, and further improves the fitting accuracy and assembly efficiency of the valve device.

[0078] In the second embodiment, such as Figures 12 to 16As shown, the first component 221 and the third component 223 are an integral structure. The second component 222 has a first positioning part 225 for cooperating with external components, and the third component 223 has a second positioning part 226 for cooperating with the first valve body 21. The second component 222 is sleeved on the outside of the first component 221. The first component 221 and the second component 222 are separate structures, and the first component 221 and the second component 222 are fixedly connected. The form of fixed connection includes, but is not limited to, interference fit or welding. The connection method of the first component 221 and the second component 222 is not specifically limited in this embodiment.

[0079] In this embodiment, processing the second component 222 as an independent component improves its machining accuracy and reduces its machining difficulty. Machining the first component 221 and the third component 223 as a whole, while meeting their machining accuracy requirements, reduces their installation difficulty and shortens the machining and assembly cycle of the second valve body 22.

[0080] like Figure 12 and Figure 14 As shown, along the axial direction of the valve assembly, the second component 222 is located on the side of the third component 223 away from the valve seat 4, and the second component 222 and the third component 223 are in contact with each other in the axial direction of the valve assembly.

[0081] In this embodiment, the second component 222 and the third component 223 are in contact in the axial direction of the valve device. During the welding process of the first component 221 and the second component 222, the risk of relative position change of the second component 222 and the third component 223 in the axial direction of the valve device is reduced, thereby improving the stability of the connection between the first component 221 and the second component 222.

[0082] like Figure 12 and Figure 14 As shown, along the axial direction of the valve assembly, the end of the first component 221 opposite to the valve seat 4 protrudes from the second component 222.

[0083] In this embodiment, the first component 221 extends away from the valve seat 4 and protrudes from the second component 222, increasing the axial dimension of the first component 221 in the valve device. This reduces the processing difficulty of the first component 221 and also helps to improve the structural strength of the first component 221. At the same time, it increases the dimension of the first component 221 for mating with the shaft portion 31 of the valve core 3, thereby improving the reliability of the mating between the first component 221 and the valve core 3 and reducing the risk of the valve core 3 detaching from the first component 221.

[0084] like Figure 16As shown, the first component 221 is cylindrical in shape, and the surface roughness Ra of the sidewall used to form the first channel 221c satisfies: 0.6μm≤Ra≤1μm. The specific roughness can be 0.62μm, 0.64μm, 0.66μm, 0.68μm, 0.7μm, 0.72μm, 0.74μm, 0.76μm, 0.78μm, 0.8μm, 0.82μm, 0.84μm, 0.86μm, 0.88μm, 0.9μm, 0.92μm, 0.94μm, 0.96μm, 0.98μm, 1μm, etc.

[0085] In this embodiment, if the surface roughness of the sidewall of the first channel 221c is small, for example, Ra < 0.6 μm, the processing difficulty of the first component 221 is high, the processing cycle is long, and the processing cost is high. If the surface roughness of the sidewall of the first channel 221c is large, for example, Ra > 1 μm, the risk of the sidewall of the first channel 221c scratching the valve core 3 is high, affecting the life of the valve core 3. Therefore, 0.6 μm ≤ Ra ≤ 1 μm reduces the processing difficulty of the first component 221, shortens the processing cycle of the first component 221, reduces the processing cost of the first component 221, and at the same time reduces the risk of the sidewall of the first channel 221c scratching the valve core 3, which is beneficial to improving the life of the valve core 3.

[0086] like Figure 13 and Figure 17 As shown, the first positioning part 225 includes a first groove 225a and a second groove 225b. Along the radial direction of the valve device, the first groove 225a and the second groove 225b are respectively located on both sides of the second component 222 of the second valve body 22. The first groove 225a and the second groove 225b are recessed into the radial edge of the second component 222 of the second valve body 22. The first groove 225a and the second groove 225b are used to cooperate with external components.

[0087] In this embodiment, the external components fix the second valve body 22 from both sides of the second component 222, which improves the accuracy of the external components in limiting the position, angle and other parameters of the second valve body 22, thereby helping to improve the processing accuracy and assembly accuracy of the second valve body 22.

[0088] like Figure 13 and Figure 17 As shown, the first groove 225a has a first opening 225c on the side opposite to the second groove 225b. In the radial direction of the valve device, the first groove 225a communicates with the outside through the first opening 225c. The second groove 225b has a second opening 225d on the side opposite to the first groove 225a. In the radial direction of the valve device, the second groove 225b communicates with the outside through the second opening 225d. The opening directions of the first opening 225c and the second opening 225d are opposite to each other.

[0089] By setting a first opening 225c at the edge of the first groove 225a and a second opening 225d at the edge of the second groove 225b, the structure of the external component can be easily extended into the first groove 225a and the second groove 225b through the first opening 225c and the second opening 225d, thereby reducing the difficulty of fitting the external component with the second component 222.

[0090] like Figure 13 and Figure 17 As shown, the third component 223 of the second valve body 22 has a first wall 226a and a second wall 226b. The first wall 226a and the second wall 226b constitute the second positioning part 226. Along the radial direction of the valve device, the first wall 226a and the second wall 226b are located on both sides of the third component 223. The first valve body 21 has a first mating wall 211 and a second mating wall 212. The first mating wall 211 mates with the first wall 226a, and the second mating wall 212 mates with the second wall 226b.

[0091] In this embodiment, during the assembly of the first valve body 21 and the second valve body 22, the first mating wall 211 is first mated with the first wall 226a, and the second mating wall 212 is mated with the second wall 226b. Then, the first valve body 21 is welded or bonded to the third component 223. The mating of the first mating wall 211 with the first wall 226a and the second mating wall 212 with the second wall 226b can play a role in pre-positioning the first valve body 21 and the third component 223, reducing the risk of relative position changes of the first valve body 21 and the third component 223 during welding or bonding, thereby improving the accuracy of the relative position of the first valve body 21 and the third component 223, and thus improving the fitting accuracy and assembly efficiency of the valve device.

[0092] The first wall 226a and the second wall 226b are both straight walls, which reduces the risk of the first mating wall 211 sliding or rotating along the first wall 226a and the second mating wall 212 sliding or rotating along the second wall 226b. This further improves the accuracy of the relative position of the first valve body 21 and the third component 223, and further improves the fitting accuracy and assembly efficiency of the valve device.

[0093] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A valve device, characterized in that, The valve device includes a valve body assembly (2) and a valve core (3); The valve body assembly (2) includes a first valve body (21) and a second valve body (22). The second valve body (22) includes a first component (221) and a second component (222). The first component (221) has a first channel (221c). The first component (221) and the second component (222) are separate structures. The first component (221) and the second component (222) are fixedly connected. The valve core (3) includes a shaft (31), at least a portion of which is located within the first channel (221c), and the outer periphery of which slides in cooperation with the wall forming the first channel (221c). The second component (222) has a first positioning part (225) for cooperating with an external component, or the second component (222) has a second positioning part (226) for cooperating with the first valve body (21).

2. The valve device according to claim 1, characterized in that, The second valve body (22) also includes a third component (223); When the second component (222) has a first positioning part (225) for cooperating with an external component, the third component (223) has a second positioning part (226) for cooperating with the first valve body (21); When the second component (222) has a second positioning part (226) for cooperating with the first valve body (21), the third component (223) has a first positioning part (225) for cooperating with an external component; One of the first component (221) and the second component (222) is integrally formed with the third component (223).

3. The valve device according to claim 2, characterized in that, The second component (222) and the third component (223) are integrally formed. The second component (222) has a second positioning part (226) for cooperating with the first valve body (21), and the third component (223) has a first positioning part (225) for cooperating with an external component. The valve device further includes a valve seat (4), which is mounted on the first valve body (21). Along the radial direction of the valve device, one side of the valve seat (4) is slidably engaged with the outer periphery of the valve core (3). The extension direction of the center line of the first channel (221c) is the axial direction of the valve device. Along the axial direction of the valve device, the second component (222) is located on the side of the third component (223) facing the valve seat (4). The second valve body (22) has a second channel (224) that extends axially through the second component (222) and the third component (223) of the valve device, with at least a portion of the first component (221) located within the second channel (224).

4. The valve device according to claim 3, characterized in that, Along the axial direction of the valve device, the first component (221) has a first surface (221a) at the end facing the valve seat (4), and the second component (222) has a second surface (222a) at the end facing away from the third component (223). The distance L between the first surface (221a) and the second surface (222a) in the axial direction of the valve device satisfies: 0≤L≤0.5mm.

5. The valve device according to claim 4, characterized in that, Along the axial direction of the valve device, the first component (221) has a third surface (221b) on the side opposite to the valve seat (4), and a portion of the first component (221) protrudes from the third surface (221b) in a direction opposite to the valve seat (4).

6. The valve device according to claim 2, characterized in that, The first component (221) and the third component (223) are integral structures. The second component (222) has a first positioning part (225) for cooperating with external components, and the third component (223) has a second positioning part (226) for cooperating with the first valve body (21). The second component (222) is sleeved on the outside of the first component (221). The valve device also includes a valve seat (4), which is installed on the first valve body (21). Along the radial direction of the valve device, one side of the valve seat (4) is slidably engaged with the outer periphery of the valve core (3). The extension direction of the center line of the first channel (221c) is the axial direction of the valve device. Along the axial direction of the valve device, the second component (222) is located on the side of the third component (223) away from the valve seat (4). The second component (222) and the third component (223) are in contact in the axial direction of the valve device.

7. The valve device according to any one of claims 1 to 6, characterized in that, The first component (221) and the second component (222) are interference-fitted, or the first component (221) and the second component (222) are welded together.

8. The valve device according to any one of claims 1 to 6, characterized in that, The first component (221) is in the form of a barrel, and the surface roughness Ra of the sidewall used to form the first channel (221c) satisfies: 0.6μm≤Ra≤1μm.

9. The valve device according to any one of claims 1 to 6, characterized in that, The first positioning part (225) includes a first groove (225a) and a second groove (225b). Along the radial direction of the valve device, the first groove (225a) and the second groove (225b) are respectively located on both sides of the second valve body (22). The first groove (225a) and the second groove (225b) are recessed into the radial edge of the second valve body (22). The first groove (225a) and the second groove (225b) are used to cooperate with external components. The first groove (225a) has a first opening (225c) on the side opposite to the second groove (225b), and the first groove (225a) communicates with the outside through the first opening (225c) in the radial direction of the valve device; The second groove (225b) has a second opening (225d) on the side opposite to the first groove (225a), and the second groove (225b) communicates with the outside through the second opening (225d) in the radial direction of the valve device; The opening directions of the first opening (225c) and the second opening (225d) are opposite.

10. The valve device according to any one of claims 1 to 6, characterized in that, The second valve body (22) has a first wall (226a) and a second wall (226b), the first wall (226a) and the second wall (226b) constitute the second positioning part (226). Along the radial direction of the valve device, the first wall (226a) and the second wall (226b) are respectively located on both sides of the second valve body (22). The first valve body (21) has a first mating wall (211) and a second mating wall (212), the first mating wall (211) mating with the first wall (226a) and the second mating wall (212) mating with the second wall (226b). Both the first wall (226a) and the second wall (226b) are straight walls.

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